This is one of four original folding mirrors from the f/12.9 wide-field mode of the first Wide-Field Planetary Camera (WFPC-1) flown on the Hubble Space Telescope (HST) on its 24 April 1990 launch. The WFPC-1 was removed from the HST during the servicing mission launched on 2 December 1993 that installed the correcting optics that compensate for the flawed primary mirror. One complete electro-optical channel from the wide field mode assembly, of which this element was a part, was transferred to NASM by NASA's Goddard Space Flight Center in September 1999. It is now on display in the Explore the Universe gallery.